Car wont start

I put the exhaust manifold gaskets on car it was running fine. The next morning I was getting ready to take the car back to the owner I started the car and it cut off. So I first I checked the connecter for the camshaft sensor and it fall apart O's I tried to hook the wires back up I did about five times the Baber started so I wont be looking for the connecter found it, but then I do not know how to connect the three wire. You gays told me how to hook the wires so I did that. But car still would not start so I started checking the car and found that the fuel pump was not working. I changed the fuel pump and the car still would not start. What do I do? Help!